It won’t show up there. You have to map a network share/drive. Use the alternative credentials option and enter the user and password from your addon config.
It has been a while, but in case someone come across the same issue.
You can Windows + R and type your HA’s IP address as Tsar said. Once you can see all the folders, you need to right click on the one you want to create a drive for and click on the ‘Map network drive…’ option.